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TBSI's Wireless Technology
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Continuous recording of single-unit neuronal activity is an important tool for studying normal and pathological brain function. Current systems typically tether implanted electronics both to remote data processors and power supplies. The tether constrains the animals’ behavior and limits possible experimental designs. Ideally, neural activity could be recorded from behaving animals in a natural and enriched environment. In this paper we present the circuits, layouts and test data for a multi-channel wireless headstage system which includes the headstage transmitter and receiver components. The system was successfully tested in a rat and a macaque monkey implanted with cortical multielectrode arrays.
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A Wireless Neural Data Acquisition System for increased power efficiency, compact size, robust signaling and reliable transmission is shown and described. In one embodiment, the system includes a headstage, an RF receiver, an analog-to-digital converter, a digital signal processor, and a communication interface. The headstage includes at least one input pre-amplifier high-pass filter and amplifier, a multiplexer (MUX), an RF Modulator compromising a voltage control oscillator (VCO), a transmitting antenna, and a power supply. The RF receiver includes at least one receiving antenna, at least one bandpass filter, at least one amplifier, at least one attenuator, and an FM Demodulator.
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